I gave up smoking nearly 3 weeks ago (after being a light smoker for 10 years) and at least once every 2 days I've been getting these really bad lows where I'm crying a lot and can't stop having negative thoughts. Then I'm fine again. It's like just pressing a switch.

I was feeling a little depressed before quitting so I guess quitting must make it worse. And I suppose it must always be harder if you are susceptible to depression/have a history of it.

I was wondering whether others had similar experiences?